Paint mixer



Sept. 9, 1952 2 SHEETSSHEET 1 awe/14M FRED ALBERT STAHL as, gwm amlfi.

F. A. STAHL PAINT MIXER Sept. 9, 1952 2 SHEETS-SHEET 2 ALBERT STAHL m.%w

Filed Dec. 20, 1946 FRED @Q fl Patented Sept. 9, 1952 Fred Albert Stahl, St. PauIQMinn Arlington Machine Works, Inc., St.

assignor to Paul, Minn a corporation of Minnesota Application December 20, 1946, Serial No. 717,337

3 Claims.

My invention relates to an improvement in paint mixers, wherein it is desired to provide a means of mixing paint or other materials in large containers.

Paint and other materials are often shipped or stored in large drums. experienced in properly mixing the paint thus contained. The pigments and heavier materials have a tendency to sink to the bottom of the drums, while the lighter oils and the like have a tendency to float on the surface. It is extremely diihcult to stir the paint sufficiently to obtain a similar consistency throughout. At the same time it is difficult to agitate the paint in any other manner, except by stirring.

It is an object of the present invention to provide an apparatus capable of receiving a drum of paint or similar material to be mixed for agitating the drum sufhciently to thoroughly mix the contents. As a result the drum of paint may be inserted in my apparatus and the contents thereof thoroughly and effectively mixed in an extremely short period of time.

A feature of the present invention resides in the provision of a paint mixer for use in mixing drums of paint, and which acts to rock the drums endwise while rotating the drums about their longitudinal axis. Accordingly while the drum is rotated to produce a stirring effect upon the contents thereof, the drums are simultaneously rocked in a manner to direct heavy particles first toward one end of the drum and then toward the other. This action results in a quick mixing of the paint to a similar consistency throughout the drum.

A feature of the present invention resides in the simplicity of the apparatus. My apparatus includes a platform supported by intermediate opposed pivots which allow the platform to rock. Upon this platform I provide a pair of aligned shaft supports which rotatably support a drum container for rotation about an axis extending at substantially right angles to the axis of the platform supports. A crank is connected to the drum supporting shafts for rotation therewith and a connecting rod connects this crank' to one end of the supporting base frame. Thus by rotating the drum support about its aligned pivots the platform is automatically tilted.

These and other objects and novel features of my invention will he more clearly and fully set forth in the following specification and claims.

In the drawings forming a part of my specification:

Figure 1 is a perspective view of my paint mixer showing one side thereof in detail.

Considerable difiiculty is r 2 Figure 2 is a perspective view of my paint mixer showing the opposite side thereof in detail. Figure 3 is a sectional view through the crank and connecting rod which connect the platform to the supporting base to rock the platform.

The paint mixer A includes a supporting base I O which is shown as being substantially rectangular in form. The base I0 includes a pair of longitudinally extending side frame members II and I2. These parallel frame members II and 12 are connected at one end by a cross member I 3 and at the other end by a cross member I 4. The base members and cross members are secured together in any suitable way as by welding or the like.

A pair of plates l5 and iii are secured to the frame members El and (2, respectively, near the cross member l4 and extend upwardly therefrom. These plates I5 and it are provided with a pair of aligned bearings H and 19 at their upper extremities. These bearings H and I9 support aligned pivots 2!} which support the auxiliary platform of the paint mixer.

The auxiliary platform of the paint mixer is indicated in general by the number 2!. This platform includes a pair of longitudinally extending parallel frame members 22 and 23 which are connected at one end by the cross member 24 and are connected near the other end by a cross member 25. A pair of upstanding supporting plates Hand 27 are edges of the frame members 22 and 23, respectively, and are fastened thereto by welding or other suitable means. The pivot pins 2d are connected to the upper ends-of the plates 26 and 27 so as to pivotally support the platform 2! about the aligned pivots 20.

A bearing bracket 2s is supported by the cross member 24 and extends upwardly therefrom. A similar bearing bracket 30 is supported by the cross member 25. The bearings of the bearing brackets 29 and 38 are in longitudinally aligned relation relative to the platform 2!. The bearing 29 supports a stub shaft 3| which is connected by a flange 32 to one end of a hollow semi-cylindrical receptacle 33. The bearing 3|] supports a stub shaft 34 which is connected by a flange 35 to the other end of the receptacle 33. Thus the receptacle 33 is rotatably supported by the aligned stub shafts3l and 34.

The receptacle 33 is trough-shaped to support a cylindrical drum B containing paint or other material to be mixed. A pair of semi-circular straps 36 and 37 are hingedly connected at each end to the receptacle 33, these strapsacting to hold the drum B in the receptacle 33. The strap connected to the side 3 36 is connected by a hinge 39 to one longitudinal edge 40 of the receptacle 33 and is connected by a hinge M to the opposite edge 42 of the receptacle 33. The strap 31 is similarly terminally connected by hinges 43 to the edges 49 and 42 of the receptacle 33. One or both of the hinges connectingeach strap-3S or 37 to the receptacle is provided with a removable pintleso that the strap may be disconnected from the receptacle at one end and swung to one side so that-the drum B may be inserted into or removed from the receptacle 33.

The shaft 34 is provided with a gear reducing unit :4 thereupon which is connected to a.pulley 45 freely rotatable upon the shaft 34. The pulley 45 is driven by belts d9 from a cooperating pulley 4'! on the motor shaft 39 of the drive motor 59. Accordingly when the motor 50 is in operation the belts 66 will drive the pulley 45 which acts through the gear reducing unit 44 to rotate the shaft as at a reduced speed. Rotation of the shaft 34 acts through the receptacle 33 to rotate the shaft 3i at the opposite end of the platform 2 l.

As best illustrated in Figures 1 and 3 of the drawings, a crank is mounted upon the end of the shaft 3|. This crank 5| is pivotally connected at 52 to a'ring 53. The connecting rod 55 is provided with a ball shaped end 5'! supported within a socket 59 mounted upon the cross member I3 of the base frame I9. As a result the connecting rod 55 is universally connected to the base frame Ill and also to the crank 51.

The operation of my paint mixer is believed obvious from the foregoing description. The motor 59 is operated until the receptacle 33 is in substantially the position illustrated in Figure 1 with the open side of the receptacle uppermost. The straps 36 and 3'5 are disconnected at one end from the receptacle and swung to one side out of the path of a drum being removed from or inserted into the receptacle. The drum B containing the material to be mixed is then placed within the receptacle 33 and two straps 36 and 3'! replaced in drum holding position.

The motor 50 is then started in operation acting through the belts 46 and the reducing gear unit 44 to rotate the receptacle 33 about the axes of the shafts 3| and 35. Rotation of the shaft 3| causes rotation of the crank 55. Accordingly as the lower end El of the connecting rod 55 is universally connected to the base I0, the operation of the crank 5| acts to raise and lower the adjacent end of the platform 2 i. In other words, the platform 2| tilts from substantially'the hori- 'zontal position shown in Figure 1, first in one direction and then in the other, lowering first one end of the drum B and then the other. The contents of the drum are thus moved longitudinally of the axis of the drum as well as angularly about the drum axis.

'In accordance with the patent statutes, I have described the principles of construction and operation of my paint mixer, and While I have endeavored to set forth the best embodiment thereof, I desire to have it understood that obvious changes may be made within the scope of the following claims without departing from the spirit of my invention.

I claim: 7 a

1. A paint mixer for mixing drums of material comprising a base, a pair of upwardly extending supports thereupon, a pair of aligned pivots supported by said supports, a frame tiltably supported intermediate its ends by said pivots, a pair of bearings mounted upon said frame near opposite ends thereof on opposite sides of the axis of said pivots, a drum support rotatably supported between said bearings, a crank rotatable with saiddrum support, a connecting rod connecting said crank and said base for tilting said base .upon rotation of said drum support, the connectionb-etween the rod and base being substantially on a vertical plane through the axes of said bearings, and means for rotating said drum support.

2. Apaint mixer for mixing drums of material comprising a base, a pair of supports extending upwardly therefrom, a frame between said supports having uprights on opposite sides thereof inwardly of said uprights on said base, aligned pivots connecting said uprights on said base to said uprights on said frame, a pair of bearings on said frame disposed on opposite sides of the axis of said pivots, a pair of stub shafts supported by said bearings, a trough shaped receptacle designed to snugly accommodate a drum and connected to said stub shafts and extending therebetween, means connected to opposite edges of said receptacle for holding a drum contained therein, a crank connected to one of said shafts, means connecting said crank to said base to tilt said frame upon rotary movement of said shafts, and means for rotating said shafts. 3. A paint mixer for mixing drums of material including a base, opposed supports on opposite sides of said base, a platform between said supports, upwardly extending members on said platform, intermediate the ends thereof and inwardly of said supports, aligned pivots connecting said supports to said members to tiltably suspend said platform between said supports, pivot supports extending upwardly from opposite ends of said platform, a drum support mounted between said pivot supports on aligned pivots, means cooperable between said drum-support and said base to tilt the platform as the drum support rotates, means rotating said drum support, said cooperable means comprising a rotatable crank and a connecting rod, anda universal joint connecting said connecting rod to said base.

FRED ALBERT. STAHL.

REFERENCES CITED The following references are of record inthe file of this patent:

UNITED STATES PATENTS Number Name Date 463,656 Wilson Nov. 24, 1891 581,022 Flanders Apr. 20, 1897 779,904 Garver et a1 Jan. 10, 1905 849,732 Flora Apr. 9, 1907 906,282 Plummer 1. Dec. 8, 1908 1,349,203 Hottmann Aug. 10, 1920 1,997,400 -Wys0cki Apr. 9, 1935 2,281,540 Kantor Apr. 28, 1942 FOREIGN PATENTS Number Country Date 342,541 Great Britain -Feb. 5, .1931 

